Corrugating-press.



No. 745,255. PATENTED NOV. 24', 1903.

J. P. SNBDDON. l

CORRUGATING PRESS.

APPLICATION FILED' FEB. 14. 1903.

5 SHEETS-SHEET 1.

M n. :z %l n No. 745,255. PATENTED NOV. 24, 1903- J. P. SNEDDON. l

GORRUGATING PRESS... APPLIonIoN 4FILED H1B. 14. 1903.

TH: sums PETERS co. PHUIOLITHO., wAsHxNsToN, o. c.

No. 745,255. PATENTED NOV. 24, 1903.

u J. P. SNEDDON.

I CORRUGATING PRESS.

APPLICATION PIL'BD FEB. 14. 190s.

jizz/filial? IIIIIIH 5 SHEETS-SHEET 4.

fn/TM PATBNTED NOV. 24,v 1903.

J.`P.SNEDD0N.` OORRUGATING PRESS.

APPLICATION FILED' FEB. 14, 1903.

N0 MODEL.

ggf-4 LJ..... I-

PATENTED Nov. 24, 190s.

DON.

G PRESS. l FEB. 14. 1903.

5 SHEETS-SHEBT 5.

ACORRUGrAIIN APPLIOATION FILED N0 MODEL.

@Hummm UNITED STATES Patented November 2li,

vPATENT OFFICE.

JAMES P. SNEDDON, OF BARBERTON, OIIIO," ASSIGNOR TO THE STIRLING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEV JERSEY.

coRRuGATlNe-PBESS.

SPECIFICATION forming part of Letters Patent No. 745,255, dated November 24, 1903.

Application filed February 14, 1903. Serial No. 143,351. (No model.)

To all whom it may concern:

Be it known that I, JAMES P. SNEDDON, a resident of Barberton, in the county of Summit and State of Ohio, have invented anewand useful Improvement in Corrugating-Presses; and I do hereby declare the following to be a y full, clear, and exact description thereof.

My invention relates to a press for shaping metal articles, and more especially for corrugating tubular articles, such as serpentine boiler-headers and the like.

One of the objects of my invention is to provide a press arranged to press a rectangular article on all faces thereof Vand simultaneously form irregularities or corrugations in two of said faces.

A further object of my invention is to provide suitable mechanism for pushing the mandrel into a tubular blank placed between the dies. v

A further object of my invention is to provide suitable gages or stops for positioning the blank and mandrel with reference to the corrugating-dies, so that the corrugations or contour of the mandrel will correspond to or aline with those of the dies.

- The invention also comprises certain details of construction hereinafter described and claimed. v

In the accompanying drawings, Figure 1 is a side view of a press with a portion thereof shown in vertical longitudinal section. Fig.

2 is a bottom view of the top sill of the press, partly in section. Fig. 3 is an elevation of the rear end .of the press with the pusher-support shown in section. Fig. 4 is a vertical transverse section on the line 4L 4, Fig. 1. Fig. 5 is a side view of the dies, showing the gages or stops in position; and Fig. 6 is a transverse section on the line 6 6, Fig. 2.

The press may be of any suitable type and operated in any suitable way; but preferably it will be of the hydraulic type, such as shown in the drawings. It comprises suitable stationary vertical and horizontal faces, together A with vertical and horizontal movable platens thelower one. Consequently the top sill 1 is provided with a stationary horizontal face 5 and a stationary vertical face 6, the latter being preferably formed on a casting bolted the article. In order to retract said platen, I

employ one or more springs, such as shown at 10, these being suitably connected to the platen-as, for instance, by being interposed Abetween a headed bolt 10, securedto the platen, and a suitable seat, such as 1l, on the casting. Any other suitable means, however, may be used for retracting the platen, or, as a matter of fact, the power-cylinders 9 may be of the double-acting type.

The lower or movable horizontal platen is shown at 15, being guided on the tie-rods 3 and actuated by any suitable mechanism, such as the vertically-arranged hydraulic cylinders 16 inthe bottom sill 2.

When used for forming corrugated headers and similar articles, the vertical die members 6 and 'Svwill be provided with substantially plain die-faces, while the corrugating-dies will be secured to the horizontal face 5 and horizontal platen 15. The upper corrugating-die is shown at 1S, suitably secured to the top sill in any preferred way, as by means of shoul ders 19, which are engaged by tongues 2O on the plates or castings 21. The lower die 22 is secured to a suitable support 23, which in turn is bolted or4 otherwise secured to the lower platen 15.

It will be readily understood that by placing the metal article in the space between the dies 6, 8, 18, and 22 and by actuating the movable platens 8 and 15 the said article will be subjected to pressure on all four sides and will be given a shape corresponding to the configuration of the dies. The shape imparted by the particular dies shown in the drawings is of ICO general rectangular form, having sinuous corrugations in the upper and lower faces there of. In case an article is to be pressed on two sides onlysuch, for instance, as flattening a tube in the preliminary step of making boilerheadersthis can be accom piished by forming a flat face 2l on the lower sides of the casting supporting the hydraulic cylinders 9, between which face 2a and the platen l5 the tube or other article can be pressed on two sides.

In forming tubular articles irregular in outline it is necessary to support the inner face thereof to prevent the same from buckling or collapsing. I use for this purpose a mandrel 25,which preferably is a rigid body of the same contour as the internal contour of the iinished tubular article and which is adapted to be inserted. in the tube and havethe latter pressed down thereupon by the dies of the press and to be thereafter removed therefrom. In order to insert this mandrel in the tubular blank after the latter has been placed in the press, I provide pushing mechanism which will shove the mandrel into the blank between the dies. This pushing mechanism comprises a suitable support or runway 26, which preferably is of trough or channel form, suoli as shown, in order to guide-the mandrel. This runway is placed in axial alinement with the dies and is suitably supported, so that it can be adjusted vertically to bring it into proper height with reference to the dies and blank. As shown, this adjustment is gotten by securing to the lower side of the runway the screws 27, which pass through rotatable nuts 28 on the upper ends of the hollow standards 29. lily merely rotating the nuts 2S by means of the projections SO the screws 27 will be raised or lowered, thus adjusting the runway 2G. In connection with this runway I use a suitable pusherfor engaging the rear end of the mandrel and shoving it into the blank. This pusher is arranged to travel longitudinally of the runway, and it may be arranged in any suitable way and actuated by any suitable power. As shown in the drawings, the pusher comprises a head 3l, having in its forward face a seat 32 for engaging the end of the mandrel. This head is suitably mounted on ways extending parallel with the runway 26. Preferably these ways will be located above the runway, so as to be out of the way. A suitable arrangement for this purpose comprises an arm 33, secured to the rear side of the top sill l of .the press and projecting out beyond the rear end of the runway 2G. This arm is provided with outwardly-projecting iianges 34 at its lower edges, which form the ways or guides for the head 3l,the latter being secured to said iianges by means of plates 35, which hold the head onto the arm, but permit it to be moved longitudinally thereof. Any suitable means may be used for reciprocating the head 3l. Preferably this is accomplished by means of a power-cylinder 36, formed or located in the top sill l of the press, the piston-rod of this cylinder being connected to the head 3l. This cylinder preferably will be of the double-acting type, so as to move the head 31 in both directions.

In forming tubular articles of irregular out line longitudinally the mandrel will be made of a configuration corresponding to the configuration of the external dies, and it is therefore apparent that the mandrel must be properly positioned in the blank with reference to the dies, so that the protuberances or corrugations on the mandrel will correspond to or aline with the depressions or corrugations in the dies. A suitable stop or gage will therefore be provided for positioning the mandrel with reference to the dies and also for positioning the blank with reference to the dies and mandrel. These stops or gages may be of Various forms and arranged in various ways. I prefer, however, toA form the mandrel-stop on Athe lower corrugating-die 22, and preferably have the same pivoted or otherwise movably secured thereto, so thatit can be thrown out of the way. As shown in the drawings, the mandrel-stop comprises a member 40, pivoted in the end of the lower die, so that it can be swung down below the upper face thereof in order to permit a blank to be placed between the dies without obstruction orto be swung up into operative position, as shown in Fig. 5, so that the end thereof will be in the path of the mandrel 25, being pushed into the blank in order to stop the mandrel in proper position with reference to the dies.

Various means may be employed for swingin g the mandrel from one position to the other and holding it in its projected position. I have shown for this purpose a link 4l, pivotally connected to the lower end of the stop 40 and having connected to its outer end a handle or bail 4:2 for operating the same. rlhis handle or bail at the point of connection with the link @il projects on either side of the latter, and the link is of such length that when the stop is turned upwardly to the position shown in full lines in Fig. 5 the shoulders on the bail 42 will drop over the end of the die 22, thus holding the stop or gage in this position. In order to swing the stop down out of the way, the bail is merely raised until the shoulders disengage the end of the die 22, when the parts can be moved to the position shown in dotted lines in Fig. 5, in which the stop or gage lies entirely below the upper face of the die, thus offering no obstruction to the placing of the blank between the dies.

In order to position the blank with reference to the dies, I provide a stop or gage 45, which preferably is removable or portable and is adapted to be placed on the lower die with one face resting against the stop lO and its other face bearing against the end of the tubular blank 46.

The operation of my press is as follows: YVe will assume that corrugated boiler-headers or similar tubular articles are to be formed. Dies 16 and 22, having the properv corrugations or configuration, will be secured respectively, to the lower face of the top sill 1 and'to the movable platen 15, and dies having the proper conguration to give the desired form to the side faces of the header will also be secured to the vertical stationary face 6 and to the platen 8l 'A mandrel 25 of a shape corresponding to the configuration of the dies will be placed on the runway 26. A tubular blank, preferably of rectangular shape, is heated to the proper temperature and then shoved betweenthe dies from the front of the press resting upon the lower die 22. During this operation the gage will be in the position shown in dotted lines in Fig. 5, the gage being entirely removed, the bottom platen 15 in its lowermost position, and the vertical platen 8 in its retracted position. As soon as the heated blank has been placed between the dies the stop 40 is thrown up into the position shown in full lines in Fig. 5 and locked by means of the bail, so that it must maintain this vertical position. The portable stop or gage 45 is then placed on the bottom die between the stop 40 and the end of the heated blank. Power `is then admitted to the cylinder 36, which will move the head 3l toward the press, thus shoving the mandrel 25 off the runway 26 and into the tu/bular blank between the dies. This movement will cause the blank to be brought up firmly against the stop 45 and will be continued until the forward end of the mandrel is brought against the stop 40. Power is then admitted to the rcylindersV 9 and 16, so as to compress the blank between the dies and onto the mandrel. l The horizontal and vertical dies may be actuated simultaneously or in any preferred sequence, it only being essential that the side die 8 should be brought into its iinal position slightly before the horizontal die 22 reaches its final position. After the desired pressure has been given to the blank the pressure in the cylinders 9 and 16 is relieved, and the platens will be retracted to their normal positions, after which the stop 40 is lowered and the stop 45 removed,

so that the shaped article on the mandrel can be removed from the dies. The press is then in position for the next operation.

XVhile I have shown and described my invention particularly for the formation of boiler-headers or similar corrugated tubular articles, it is to be understood that it is not limited thereto, but that it can be used for forming tubular metal articles of any kind or configuration. Furthermore, the mandrelpushing mechanism and gage or stop 40 are of value for shaping articles other than tubular, the stop serving to properly position the blank in the dies, and the pusher in that case may be employed for pushing the hot blank into the dies.

vVhat I claim'as my invention, and desire to secure by Letters Patent, is-

l. In a press for shaping metal articles, the

combination withthe dies and mechanism for actuating thesame,fof; a support or runway in line with the dies, supporting means for said runway arranged to'adjust-,the same way in line with the dies, supporting meansl for 'said runway including vertically arranged screws for adjusting the runway vertically, and a pusher arranged to reciprocate longitudinally of said runway.

3. In a press for shapingV metal articles, the combination with the dies and mechanism for actuating the same, of a trough or channel runway in line with said dies, an arm projecting from the press over said runway and a power-actuated pusher arranged to reciprocate longitudinally on said arm.

4. In a press for shaping metal articles, the combination with the dies and mechanism for actuating the same, of a runway or support in line therewith, guides or ways projecting over the same, a downwardly-projecting pusher-head guided on said ways, and a power mechanism for actuating said pusherhead.

' 5. In a press for shaping tubular metal articles, the combination with the dies and mechanism for actuating the same, of a mandrel, mechanism for pushing the same into the blank between the dies, and a stop pivoted so as to swing in a plane longitudinally of the dies and arranged when projected to limit the forward movementof the mandrel.

6. In a press for shaping metal tubular articles, the combination with the top, bottom and side dies and mechanism for actuating the bottom and one side die, of a mandrel, mechanism for pushing the same into the blank between the dies, and a stop movably mounted on thel bottom die in position to limit the forward movement of the mandrel.

7. In a press for corrugating or embossing metal tubular articles, the combination with the dies of irregular outline and mechanism for actuating the same, of a mandrel, and two gages or stops arranged to engage and position both the mandrel and the blank.

8. In a press for corrugating or embossing tubular metal articles, the combination with the top, bottom and side dies and mechanism for actuating the bottom and one side die, of a mandrel, and gages movably mounted on the bottom die and arranged to engage and position both the mandrel and the blank.

9. In a press for corrugating or embossing tubular metal articles, the combination With the dies and mechanism for actuating the same, of a mandrel, a gage or stop movably IOO IIO

mounted on one of the dies and arranged to v .A

engage and position the mandrel, and a removable stop adapted to be placed between or stop pivoted to one of the dies to swing longitudinally thereof, and means connected to said gage or stop for moving the saine into i operative position, said means being arranged to engage the end of the die to hold the gage in operative position.

In testimony whereof I, the said JAMES P. SNEDDON, have hereunto set my hand.

' JAMES P. SNEDDON.

lVitnesses:

E. E. BAKER, J. C. FRANK. 

